<template>
  <el-upload
    class="img-upload"
    ref="upload"
    action="http://47.114.46.44:8081/covers"
    :on-preview="handlePreview"
    :on-remove="handleRemove"
    :before-remove="beforeRemove"
    :on-success="handleSuccess"
    multiple
    :limit="1"
    :on-exceed="handleExceed"
    :file-list="fileList">
    <el-button size="small" type="primary">点击上传</el-button>
    <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
  </el-upload>
</template>

<script>
  export default {
    name: "ImgUpload",
    data() {
      return {
        fileList: [],
        url: ''
      }
    },
    methods: {
      handleRemove(file, fileList) {
        this.url = ''
        this.$emit('onRemove')
      },
      handlePreview(file) {
      },
      handleExceed(files, fileList) {
        this.$message.warning(`当前限制选择1个文件，本次选择了${files.length}个文件，共选择了${files.length + fileList.length}个文件`);
      },
      beforeRemove(file, fileList) {
        return this.$confirm(`确定移除${file.name}？`);
      },
      handleSuccess(response) {
        this.url = response
        this.$emit('onUpload')
        this.$message.warning(`上传成功！`)
      },
      clear() {
        this.url = ''
        this.$refs.upload.clearFiles();
      }

    }
  }
</script>

<style scoped>

</style>
